Thursday, 30 October 2014

How-to: Adjust Security for Mixed Content and Frames


Firefox insecure site blocking
Adjusting your web-browser security settings
If at any stage browsing the web you are presented with a blank page, you may need to refresh your  browser's cache by pressing the Control and F5 keys.

Failing that, different web browser software may require additional steps to adjust the security settings. Please consider carefully your need to apply this on any other websites.

'Mixed content' and frames

If you can rule out any firewall or site blocking issues, you may find the problem comes from embedded content from third-party sites -in particular the dreaded iframes. Your web-browser software may be overcautious in it's treatment of 'mixed content'.


Internet Explorer provides various messages when it loads mixed content pages. Users may need to select the option "allow blocked content" when prompted at the bottom of the page.
Internet Explorer - allow blocked content
Firefox puts a more cryptic shield icon in the address bar. When you see this shield icon in the address bar, it means that Firefox has blocked content it suspects is insecure on the page you're visiting.
  • Click the shield icon Firefox insecure site icon in the address bar and choose Disable Protection on This Page from the dropdown menu (click on the image to see it full size in a new tab). 
  • The icon in the address bar will change to an orange warning triangle Firefox warning icon to remind you that insecure content is being displayed.
Chromium browser - allow 'unsafe' scriptsThe Chromium browser handles things in a similar way, with the shield icon on the far edge of the address bar. Clicking on this opens the more cryptic warning about 'unsafe scripts'. In this case you can click on Load unsafe script which will allow content to load onto the page.

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